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Changsha is the capital city of Hunan, a province of south-central China, located on the lower reaches of Xiang river, a branch of the Yangtze River. Its municipality covers an area of 11,819 sq. kilometers and has a population of 6,017,600 (2003 intercensal estimate), the urbanized area has around 2.7 million people.

Changsha was important from the time of the Qin dynasty (221–207 BC). In AD 750–1100 Changsha was an important commercial city, and its population increased greatly. Under the Qing dynasty, from 1664, it was the capital of Hunan province, and it was a major rice market. It was besieged during the Taiping Rebellion but never fell. Changsha was the site of Mao Zedong's conversion to communism. It was the scene of major battles in the Sino-Japanese War of 1937–45 and was briefly occupied by the Japanese. Rebuilt since 1949, the city is now a major port and a commercial and industrial center.

Changsha has a large thermal generating station linked by a power grid with the nearby industrial centres of Zhuzhou and Xiangtan; the three cities were designated in the 1970s as the nucleus of a major industrial complex. In the 1960s there was some development of heavy industry. The manufacture of machinery, especially machine tools and precision tools, became important, and Changsha became a center of China's aluminum industry. The city also has cement, rubber, ceramic, and papermaking plants and is a centre for many types of traditional handicrafts, producing hsiang embroidery, leather goods, umbrellas, and buttons. Coal is mined in the vicinity.